21439370

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{683}}^1$

素因数の和:806

約数の個数: 32

約数和(自身を含む): 40087872

約数和(自身を除く): 18648502

約数列:

[1, 2, 5, 10, 43, 73, 86, 146, 215, 365, 430, 683, 730, 1366, 3139, 3415, 6278, 6830, 15695, 29369, 31390, 49859, 58738, 99718, 146845, 249295, 293690, 498590, 2143937, 4287874, 10719685, 21439370]

約数ペア:

[(1, 21439370), (2, 10719685), (5, 4287874), (10, 2143937), (43, 498590), (73, 293690), (86, 249295), (146, 146845), (215, 99718), (365, 58738), (430, 49859), (683, 31390), (730, 29369), (1366, 15695), (3139, 6830), (3415, 6278)]